Amitabh Bachchan's Diwali Bash
Amitabh Bachchan invited many guests for Diwali bash at his residence, JalsaVarinder Chawla

Bollywood megastar Amitabh Bachchan's upcoming film "Piku" has become the talk of the town, mostly because of its big star cast and the unique title.

Recently, Big B who has been shooting for the Shoojit Sircar directorial in Kolkata, had shared a picture of him with a huge tummy. The picture gives a clear hint that the megastar has completely transformed himself in the film.

And now, an adorable picture has surfaced online, where Big B, Deepika Padukone, Irrfan Khan and Sircar have posed for a selfie.

In the selfie, taken by the lead actress Padukone, which was later shared by Khan on his official Twitter handle, both the actress and the megastar are seen making some funny expressions while Khan and Sircar pose with a usual smiling face.

The selfie is a memorable one as it has managed to bring all the lead casts and the director in a single frame for the first time.

The plot of the film revolves around a crazy father-daughter relationship. Bachchan and the "Happy New Year" actress will be essaying the role of a Bengali father and daughter respectively. The film also has veteran actress Moushumi Chatterjee in a pivotal role.

Produced by MSM Motion Pictures in association with Saraswati Entertainment Creations Limited and Rising Sun Films, the film's shooting is currently going on in Kolkata city. Big B was also spotted merrily riding a bicycle in the city of joy. The first schedule of the film was successfully completed in Mumbai.

Directed by Sircar of "Vicky Donor" and "Madras Cafe" fame, "Piku" is slated to release worldwide on 30 April 2015.